Olympia Jumbo Sized Rolling Duffel Mammoth 40 Inch Size, Black/Royal Blue, One Size Constructed of 1500D polyester Recessed in-line skate metal ball bearing wheels with traction Push button retractable handle U-top opening to massive main compartment Front zippered pocket for organized packing & ventilated side zippered pockets Two zippered pockets inside the main compartment Guard rails on the bottom for added protection 8 Convenient pockets for maximum packing capacity Self-reparing zippers and Guard rails on the back for extra protection Top & bottom zipper pockets for extra packing capacity U-top opening to roomy main compartment size-40"x18"x17"